interconnect: Fix kerneldoc warning

Fix the following warning:
drivers/interconnect/bulk.c:63: warning: expecting prototype for
icc_bulk_set(). Prototype was for icc_bulk_set_bw() instead

Link: https://lore.kernel.org/r/20210318163415.30941-1-georgi.djakov@linaro.org


Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>